Questions Asked on
August 21, 2013

  1. Biology (Science)

    Which of the following is not true about a hypothesis? 1) Previous knowledge can help support it. 2) It is a tentative explanation. 3) It can be proven to be false. 4) It must be testable to be useful. 5) It can be proven to be true. I know for sure that 2

    asked by Sarah
  2. Chemistry;HELP

    Volume Problems Answer the following questions. Scan and upload your questions and answers to your student section labeled Volume Volume Problems. Identify the following chemical equations by type. 1. If an electric discharge produces 500 cm3 of ozone

    asked by Unknown
  3. physics

    A 45.0 g ball of copper has a net charge of 1.5 µC. What fraction of the copper's electrons have been removed? (Each copper atom has 29 protons, and copper has an atomic mass of 63.5.)

    asked by Justin
  4. English

    1. What is the name for the head of an orphanage? 2. What is the name for the head of an nursery school? 3. What is the name for the head of a day-care center? 4. What is the name for the head of a senior center? 5. What is the name for the head of a

    asked by rfvv
  5. chemistry

    What is the density of a cube that has a mass of 134 g and the side of the cube measures 2.75

    asked by Joe
  6. Physics/Formulas

    Calculate the SI units of the constants A and B in each of the following equations. Assume that the distance x is in meters (m), the time t is in seconds (s), and the velocity v is in meters per second (m/s). a. x = A + B.t Meters = A + B * seconds b. x =

    asked by Paul
  7. Statistics

    Is GPA a quantitative or categorical variable? I think it is quantitative because it consists of numbers...

    asked by Waldo
  8. math

    carrie has 340 marbles to put in vases. the vases hold either 100 or 10 marbles each. which is away she can arrange the marbles

    asked by Anonymous
  9. Science

    What is the inner product of 3/5|0>−4/5|1> and |+>? Be sure to explicitly write * if you want to indicate multiplication. Rewrite 3/5|0>−4/5|1> in the sign basis. I tried many times but i am getting wrong answer.

    asked by SS01
  10. English

    1. I want to buy anything at the shop. 2. I want to buy something at the shop. (What is the diference between the two sentences?)

    asked by rfvv
  11. English

    Which word has the most nearly opposite meaning of capitalized word? 1.FRACTION eon, portion, whole, moment 2. STATIC temporary, nostalgic, changeable, gradual 3. LINEAR straight, narrow, bright, crooked 4. HINDER progress, cripple, help, obstruct 5.

    asked by Hayley
  12. 9th grade Geography

    how were natural resources important in shaping the Midwest's industries?

    asked by Leslie
  13. Math

    Alice is thinking of two numbers. When she adds them she gets 64. When she multiplies them she gets 735. What are her two numbers?

    asked by Allia
  14. Spelling Exercises

    Sentence: The doctor's grave ______ showed that he had been unable to save the dying man. Which words best fits the sentence? A)Demeanor B)Inflexible C)Valor

    asked by Losa
  15. math

    Leonard has 17 quarters and dimes coins.He has 8 quarters. how many dimes do he have

    asked by zman
  16. math

    Find the complex zeros of the polynomial function, and write f in factored form: f(x)= x^3 - 8x^2 + 30x - 36

    asked by sheila
  17. Ecology Help !!!

    What does it mean to say that something is natural and how does the human fit into the larger web of natural relationships?

    asked by Leiti
  18. english

    Question: 2 of 5: Which topic would a writer be least likely to ask a peer reviewer to comment on?Select one of the options below as your answer:A. use of subordinate clauses within the essay B. personal experiences used to support a pointC. how the body

    asked by karli
  19. Latin

    this is very basic latin. does this make sense? The question: Estne Marcus Servus? My Answer: Minime! Marcus non est servus quod est puer romanus. Its supposed to say no! Marcus is not a slave because he is a roman boy.

    asked by bryce
  20. writing

    How can you get better help from peer reviews?A. write better essays B. work as a team C. ask questions

    asked by karli
  21. Mathis

    Fiona is dissatisfied with her current weekly salary. If she received a raise of $0.50 per hour and worked an additional 4 hours each week her weekly salary would then be $500. What is Fiona current salary a) $380 b)$400 c)$420 d)440 e) not e ought

    asked by Roger
  22. Biology

    The intracellular fluid concentration is 300 mOsm/kg. The extracellular fluid concentration is 280 mOsm/kg. The net movement of water is in which direction?

    asked by Susan
  23. math

    Hi! I'm Maddie. I need some help on my homework. Here are three problems I need help with: A bowl contains only red marbles, blue marbles and green marbles. The probability of selecting a red marble from the bowl is 3/13. The probability of selecting a

    asked by Maddie
  24. fractions

    Write the following fraction as a numeral: One piece of pie from a pie that is cut into six parts. Please check: 1/6

    asked by Ericka
  25. science

    How do food, oxygen and water enter a cell?

    asked by Cameron
  26. Math

    The value of the digit in the hundredths place (the number is one by the way) is something times greater than the digit in the tenths place. Thank u for the answers 😄

    asked by Alondra
  27. Math

    A gardener has 27 roses and 36 daisies. He plants an equal number of each type of flower in each row. What is the greatest possible number of roses in each row.

    asked by Anonymous
  28. algebra 1

    Evaluate each absolute value expresion. a. [54] b.-[7 3/5] c. [3]-[1] d. [2.2-5.13]

    asked by Lorelei
  29. math

    Members of the West High School Band were hard at work practicing for the annual Homecoming Parade. First, they tried marching in rows of 12, but himself to bring up the rear left Andrew. Then the director told the band members to march in columns of

    asked by joe
  30. Math

    if pencils cost 20 cents and pens cost 30 cents each how much does it cost for p pencils?

    asked by Mikayla
  31. Math

    if pencils cost 20 cents and pens cost 30 cents how much does r pens and p pencils cost? please help.

    asked by Mikayla
  32. Algebra

    What is the rule for the function x= 4, 5, 6, 7, 8 y= 8, 15, 24, 35, 48

    asked by Betty
  33. computer science

    Flash memory is an example of which type of storage medium? A. Magnetic B. Optical C. ROM D. Solid-state I choose B. I'm I on the right track?

    asked by NeNe
  34. Trigonometry

    What does a trigonometric value represent?

    asked by Anonymous
  35. physics

    If 2.00 multiplied by 1020 electrons move through a pocket calculator during a full day's operation, how many coulombs of charge moved through it?

    asked by Justin
  36. American national government

    The tenth amendment balances out national authority by

    asked by Meria
  37. Grammar

    Which sentence is grammatically correct? Most of the European population was peasants. or Most of the European population were peasants. Thanks!!!

    asked by Serena
  38. physics

    How many coulombs of positive charge are there in 8.70 kg of plutonium, given its atomic mass is 244 and that each plutonium atom has 94 protons?

    asked by Justin
  39. Math

    If a car travels at 93km/h what rate is it traveling in km/min

    asked by Kiara
  40. Mechanics

    In a direct acting pressure relief valve, 64 bar pressure is acting on the conical dart seating area and the dart is kept closed by a spring force of 50 kg opposing the pressure. (5) a) Determine the bore diameter on the seat. b) What will the spring force

    asked by Tony
  41. English

    1 The lack of a ___ system of measurement is an international problem. scanty, uniform, transient, instantaneous 2. Almost ____ communication kept the President up-to-the-minute with events at the conference. exponential, transient, instantaneous,

    asked by Hayley
  42. History: America Land I Love

    How did Roger Williams view separation of church and state? --I kept reading the paragraph but I can't find the answer of HOW he viewed it. Should I reread it again?

    asked by Losa
  43. physics

    An athlete swims from the north end to the south end of a 50.0m pool in 20.00s and makes the return trip to the starting point is 22.0s

    asked by bryan
  44. chemistry

    during an experiment, 20 ml of 4 M hydrochloric acid is mixed with 30 ml of water. what is the concentration of your new solution

    asked by Emily
  45. chemistry

    what is the concentration of a 250 ml solution that contains 44 grams of magnesium fluoride

    asked by Emily
  46. Chemistry

    can someone balance this redox please. frustrating because i don't know what else im doing wrong. C2O4^2- + MnO2 --> Mn^2+ + CO2 my answer is 2C2O4^2- + MnO2 + 4H3O^+ --> Mn^2+ + 4CO2 + 6H2O im getting mad please help thanks.

    asked by justin
  47. English

    1. I want to do volunteer work at a nursing home. 2. I want to do volunteer work in a nursing home. (Which preposition should we use? Are both OK?) 3. I want to do volunteer work at an orphanage because I want to take care of orphans who are helpless. 4. I

    asked by rfvv
  48. science

    do you believe that theories can never be proved, only disproved?

    asked by maria
  49. math

    wt is the input output of 40

    asked by Anonymous
  50. physics

    Time=distance/velocity =20/300 =0.067secs s = ut 1/2gt^2 s = 0*0.067 0.5*10*0:067^2 s = 0 5*0.004489 s = 0 0.0224 s = 0.022m

    asked by James
  51. physics

    Time=distance/velocity =20/300 =0.067secs s = ut 1/2gt^2 s = 0*0.067 0.5*10*0:067^2 s = 0 5*0.004489 s = 0 0.0224 s = 0.022m

    asked by James
  52. physics

    When a parachute opens, the air exerts a large drag force on it. This upward force is initially greater than the weight of the sky diver and thus slows him down. Suppose the weight of the sky diver is 905 N and the drag force has a magnitude of 1005 N. The

    asked by physics
  53. maths

    ABCD is a trapezoid with parallel sides AB and CD. Γ is an inscribed circle of ABCD, and tangential to sides AB,BC,CD and AD at the points E,F,G and H respectively. If AE=2,BE=3, and the radius of Γ is 12, what is the length of CD?

    asked by ashu
  54. maths

    Calvin stays on the 7th floor in his building. Between each floor, there are exactly 12 stairs. If he starts from the 1st floor and climbs his way up to the 7th floor, how many stairs does he climb?

    asked by ashu
  55. maths

    If the integer N leaves a remainder of 1234 when divided by 2013, what is the remainder when N is divided by 183?

    asked by ashu
  56. Science

    A train starts from rest and accelerates uniformly, until it has traveled 3000 m and acquired a velocity of 24 m/s. The train then moves a constant velocity of 24 m/s for 430 s. The train then decelerates uniformly at 0.065 m/s², until it is brought to a

    asked by Brandon
  57. physics

    10) Horizontal beam supported on both ends - square profil 100 × 100 × 5, length is 800 mm.It is bent by the force in the middle of the beam by 0.2 mm. To achieve approximately half of the value of deflection,you will use the beam:

    asked by PAUL
  58. chemistry

    The molar heat of fusion for water is 6.01 kJ/mol. How much energy must be added to a 75.0-g block of ice at 0°C to change it to 75.0 g of liquid water at 0°C? 1.44 kJ 10.18 kJ 12.48 kJ 25.04 kJ

    asked by sean
  59. physics

    2) The weight of tank is 50 000 kg, area of his tracks is 5 m2. What pressure acts on the ground?

    asked by PAUL
  60. algebra I

    Would like the best way to explain two variable equations to 9th grader.

    asked by Preston
  61. science

    16) Which material is the most suitable for absorption of vibration? a) Steel b) Cast iron c) Aluminium d) Manganese Bronze e) Bronze

    asked by PAUL
  62. psy

    Understanding accepted standards of behavior when you enter a new classroom demonstrates the process of

    asked by lisa
  63. grammar

    Which is the best linking word to make the following sentence correct? The dog started barking __________ he sensed a threat.A. untilB. becauseC. beforeD. whether

    asked by karli

    PLEASE HELP ME I NEED THIS ASAP The question is -tourism has the potential to increase employment opportunities and real income per capita. however ,crime is a major inhibiting factor in the growth of this industry.- discuss tourism as a factor facing

    asked by JERARD LEE
  65. Health

    Why are many fad diets considered unhealthy? A. Because they may not provide all of the nutrients your body needs B. Because they often promise quick weight loss C. Because people typically find it difficult to keep lost weight off D. All of the above D?

    asked by Brandon
  66. Health

    How do you lose weight? A. By using up less calories than you take in B. By using up more money on diet programs and pills C. By using up less energy than you take in D. By using up more calories than you take in I think it's D.

    asked by Brandon
  67. Biology (Science)

    John uses mechanical "predators" to approach frogs at a pond shore, and he records the distance between predator and frog as the frogs jump. (PEER REVIEW) On a walk around pond John sees that small frogs on the shore only allow him to get within 5 feet

    asked by Sarah
  68. Health

    For adults, which ranges below reflect an accurate BMI category? A. If your BMI is less than 18.5, it falls within the obese category B. If your BMI is 25-29.9, it falls within the underweight category C. If your BMI is 30 or higher, it falls within the

    asked by Brandon
  69. Chemistry;HELP

    1. A sample of gas under a pressure of 622 kPa has a volume of 233 cm3. The pressure is increased to 988 kPa, while the temperature remains constant. What volume will the gas occupy at this pressure? 2. The pressure exerted by a gas is 2.0 atm while it has

    asked by Unknown
  70. chemistry

    Does anyone know what this compound is: C2H3ClBrF? I need a skeleton diagram. Many thanks Sue

    asked by sue
  71. Math (Finance)

    Can someone please help me with these questions? I do not know how to solve them. I need them by 4:00pm PST. Thanks in advance. Problem 6.19 Trigen Corp. management will invest cash flows of $772,380, $776,008, $982,094, $818,400, $1,239,644, and

    asked by Helpless
  72. Statistics

    According to DeVeaux/Velleman, the best way to succeed in the study of statistics is to memorize definitions and learn equations? True or False I chose True

    asked by Waldo
  73. Biology

    The intracellular fluid concentration is 300 mOsm/kg. The extracellular fluid concentration is 280 mOsm/kg. The net movement of water is in which direction?

    asked by Susan
  74. Statistics

    According to a genetics model, plants of a particular species occur in the categories A, B, C, and D, in the ratio 9:3:3:1. The categories of different plants are mutually independent. At a lab that grows these plants, 218 are in Category A, 69 in Category

    asked by Brandon
  75. Statistics

    A simple random sample of cars in a city was categorized according to fuel type and place of manufacture. domestic foreign gasoline 146 191 diesel 18 26 gasoline/ 51 79 electricity hybrid 1. If the two variables were independent, the expected number of

    asked by Brandon
  76. math

    how to do you do missing digits to make each number sentence true

    asked by desmiyoung
  77. PSP

    The sentence "P ¨ Q" is read as (Points : 1) P or Q P and Q If P then Q Q if and only

    asked by bob
  78. Algebra

    39/8(-11/3r + 1) = 897/8

    asked by Anonymous
  79. math

    Use proportions to solve this problem: Lisa ran 3 miles in 21 minutes. At that rate, how long would it take Lisa to run 5 miles?

    asked by Janey
  80. French

    What does "Ce bébé a un jour" mean?

    asked by Anonymous
  81. Mathis

    Cindy cellular phone service has a monthly charge of $32.99 but adds a service charge of $0.79 per minute for calls made out of her local service area. Cindy has budget herself $45 per month for using her cell phone. What is the maximum number of minutes

    asked by Haron
  82. Maths

    A ramp was built to move equipments into a shed. The ramp rises one foot. If the lower edge of the ramp is 8 feet from the base of the shed what is the approximate length in feet of the ramp Can someone please help me with this question

    asked by Sara
  83. Math

    trying to decide between parameter and statistic for the 2 questions below. I think it is statistic for both but not sure. 1. A local newspaper conducted a survey last week. Of the 2300 subscribers, 1276 responded. Based on the survey, the editor concludes

    asked by Brandi
  84. Math

    If each 11 football teams In a college athletic conference played each of the other teams just once in a season, how many games would there be? As part of your answer, make a table. How many games would there be for 12 teams?

    asked by Abi
  85. math

    carrie has 340 marbles to put in vases. the vases hold either 100 or 10 marbles each. which is away she can arrange the marbles

    asked by Anonymous
  86. Anthropology

    What are some examples of careers for Prehistoric Archaeologists?

    asked by Claire